Abstract: A system has an electronic interface, one or more sensors, a memory, and a control system including one or more processors. The processors are configured to execute instructions for activating an edema test, automatically or in response to receiving a user request via the electronic interface. Upon activation, user instructions are provided to locate, via one or more of the sensors, a skin area in the subject for testing. A user is instructed to depress the skin area for causing a temporary indentation. One or more images of the temporary indentation are captured, via one or more of the sensors, over a period of time following the depression of the skin area by the user. The images are analyzed for characteristics of skin bounce-back, which represents rebounding of the skin area after the temporary indentation. An edema result is determined based on the characteristics of the skin bounce-back.

Abstract: A method includes receiving, from a first sensor, first physiological data associated with a first sleep session of a user. The method also includes receiving, from a sensor, second physiological data associated with a first sleep session of a user. The method also includes determining a first set of sleep-related parameters associated with the first sleep session of the user based at least in part on the first physiological data. The method also includes determining a second set of sleep-related parameters associated with the first sleep session of the user based at least in part on the second physiological data. The method also includes calibrating the second sensor based at least in part on a comparison between the first set of sleep-related parameters and the second set of sleep-related parameters.